1169.09 STREET VERTICAL STANDARDS AND SPECIFICATIONS.
Vertical street profiles shall conform to the maximum and minimum grades listed below.
 
(a)   Arterial Streets
Maximum Grade - 4%
(b)   Collectors and Residential Streets and Alleys

Maximum Grade - 6%
(c)   Intersection Approaches
Maximum Grade - 4%
(For at least 100 ft.)
(d)   Rate of Change of Grade
Maximum Grade -
4 ft. per 100 ft.
(e)   Minimum Grade (Normally only for Streets with Curbs and Gutters)

0.1%